Pass task runners to AudioManager constructor.

media/audio/android/audio_manager_android.h

Index: media/audio/android/audio_manager_android.h
diff --git a/media/audio/android/audio_manager_android.h b/media/audio/android/audio_manager_android.h
index f9b7db253498d42185c671d2d48d29e7b8484579..22b48c82173d9627251e103c30a613a671c4e92c 100644
--- a/media/audio/android/audio_manager_android.h
+++ b/media/audio/android/audio_manager_android.h
@@ -20,7 +20,10 @@ class OpenSLESOutputStream;
 // Android implemention of AudioManager.
 class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
  public:
-  explicit AudioManagerAndroid(AudioLogFactory* audio_log_factory);
+  AudioManagerAndroid(
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> worker_task_runner,
+      AudioLogFactory* audio_log_factory);
 
   // Implementation of AudioManager.
   bool HasAudioOutputDevices() override;
@@ -71,7 +74,6 @@ class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
 
  private:
   void InitializeOnAudioThread();
-  void ShutdownOnAudioThread();
 
   bool HasNoAudioInputStreams();
   void SetCommunicationAudioModeOn(bool on);